Fix navigation arrows.

Normand Briere

2019-09-08 4a303a7b3635adfee8f46ac76af4e1b7b4a7029b

 timeflow/vis/timeline/TimelineTrack.java
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@@ -8,7 +8,6 @@
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 public class TimelineTrack implements Comparable
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 {
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-
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         String label;
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         List<VisualAct> visualActs = new ArrayList<VisualAct>();
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         int y0, y1;